Pith Number

pith:BO7W5VZP

pith:2005:BO7W5VZPZW6N3OZVMEQK2HBQB4

not attested not anchored not stored refs pending

The H II Region of the First Star

Marcelo A. Alvarez, Paul R. Shapiro, Volker Bromm

arxiv:astro-ph/0507684 v2 · 2005-07-29 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BO7W5VZPZW6N3OZVMEQK2HBQB4}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Little Red reionization factories

Receipt and verification

First computed	2026-07-04T17:14:56.902698Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bbf6ed72fcdbcddbb356120ad1c300f204e17b4e2939b797adcb1f2d9a7110c

Aliases

arxiv: astro-ph/0507684 · arxiv_version: astro-ph/0507684v2 · doi: 10.48550/arxiv.astro-ph/0507684 · pith_short_12: BO7W5VZPZW6N · pith_short_16: BO7W5VZPZW6N3OZV · pith_short_8: BO7W5VZP

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/BO7W5VZPZW6N3OZVMEQK2HBQB4 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 0bbf6ed72fcdbcddbb356120ad1c300f204e17b4e2939b797adcb1f2d9a7110c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8732f337d56a6914e9c3f350767941ef8fd804ea3652d232ba05e7e1f06ddca4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-07-29T01:23:12Z",
    "title_canon_sha256": "16147db9517baa90d78f6a1d40b1d4ce6112ad345fc81dd415fe55eca0a84208"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0507684",
    "kind": "arxiv",
    "version": 2
  }
}